CVE-2026-31743
Buffer Overflow in Linux Kernel NVMEM Driver
Publication date: 2026-05-01
Last updated on: 2026-05-03
Assigner: kernel.org
Description
Description
CVSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's nvmem subsystem, specifically in the zynqmp_nvmem component. The issue is that the buffer size used during DMA (Direct Memory Access) allocation and memcpy operations is incorrect. This incorrect buffer size can cause undersized DMA buffer access, which may lead to memory corruption.
How can this vulnerability impact me? :
The impact of this vulnerability is potential memory corruption due to undersized DMA buffer access. Memory corruption can cause system instability, crashes, or unpredictable behavior, which may affect the reliability and security of systems running the affected Linux kernel.
What immediate steps should I take to mitigate this vulnerability?
The vulnerability involves incorrect buffer size usage in dma_alloc_coherent and memcpy in the Linux kernel's nvmem zynqmp_nvmem driver, which can lead to memory corruption.
To mitigate this vulnerability, you should update your Linux kernel to a version where this issue has been fixed.